Gridwatch underestimates wind. Go to Drax Electric insights for better info. https://electricinsights.co.uk/#/homepage?&_k=u1v3d2If "Gridwatch" is accurate, its wind figures don't seem to get above 14GW, and most recently somewhat less.
Having looked at figures over a couple of years, the gas figure remains stubbornly high, and there are too many calm, cloudy spells for comfort (I think we are just starting one now).
The interconnectors are important, when they work, but they are also allowed to export energy as well as importing it.
At this moment we appear to be a net exporter of power to Europe, as France is taking 2GW.
France seems to have some about 7GW of nuclear off line Compared to this time last year. hence we are exporting (as is Germany, lots).